Untitled record

In electrical flush mounting devices, the mounting screws for holding the apparatus in the wall box in slot-shaped holes, so that the apparatus can be rotated in the assembly in its axis perpendicular to the wall, because the cans can not always be set so accurately that z. B. square covers exactly vertical. The slots in which the screws sit, are usually designed like a bayonet and have for this purpose at the end of the slot an extension through which the head of the fastening screw passes. It is then when mounting or removing the apparatus unscrewing the screws is not necessary. Serving as a support frame but must be made very wide due to the aforementioned extensions of the mounting hole slots so he. has enough stability.

In the subject invention, the adjustability of the support frame is achieved in a simpler and far cheaper way. It consists in that circular recesses are present in the frame-shaped support plate or the ring, which comprise the thread of the fastening screws from the outside and which expire at both ends in extensions through which the heads of the fastening screws can pass. In the figure, a support frame is shown in which the circular recesses are easy to see.

The frame r has the two circular recesses a and 3, which comprise the two screws 4 and 5 from the outside. At the ends of the two recesses, the extensions 6 and 7 or 8 and 9 are provided, through which the heads of the two screws 4 and 5 can pass when the frame is removed from the wall box or placed on the same. This simple arrangement of the support frame can be made relatively narrow, without losing its stability.